Py file not get compiled for customization

Hello all,
I have some issue with custom coding via custom App. I need some function to added in some of the file of erpnext, so that i can call it from my custom App. but the py file in which I am writing my function is not getting complied. My instance is in development mode. Can anyone suggest me solution?


Share what have you tried or what is your scenario. So it will easy to understand your concern.